E6850 Overclock

hey guys!
I must admit, I am a real newbie(nuub) to overclocking. But I have read a few guides. I know all about getting into my BIOS, I know temps and stats within my system. So now its time to get started to get serious about this thing.
However, my problem is:

I have no clue on how to set voltage, fsb etc etc. And which menues i should chose to alter in my bios to test out the system. I have tried several things in the bios but so far all ive gotten is a fairly unstable and unwilling system.
This is mostly because I have no guideline as to what voltages to use comparing to multipliers, NB settings etc. etc...
I would really appreciate any help you can come up with. Also guides.

My computer has a fairly perfect fan cooling system since i have the Zalman Gt-1000. Z-machine cabinet. It has 2 big fans in front and big one at back. Ive also taken out unnessessary crap inside the tower. MB temp keeps a stable and almost unchanging max 35 degrees(C) and basically the same with cpu. At least Ive never seen it pass 40 once even in hard gaming like farcry 2 with max settings on everything. Would be awesome to at least get some 4ghz out of the cpu though, which shouldnt make the system overheat. Again, Id love any hints, guides or whatever that could help me out! Asus provided this AI suite which was compatible with older windows versions, but this also made the system quite unstable.

I think 3.6Ghz would be more of a realistic overclock, 4.0Ghz would be quite hard. To get to 3.6Ghz you have to set the FSB to 400.

Raise the NB voltage by +0.1v. And for 3.6Ghz you probably need something like 1.45v on the CPU. The CPU would then run considerably hotter. Also check that once you have set the FSB to 400, make sure the memory speed is still within specs before you save and exit.

hi!
thanks for quick response...
currently the cpu runs at voltage: 1,264V at full so i guess 1, 45 should be fine. I ran 400 on the FSB without changing voltage or anything else, but then everything became quite unstable.

hi!
thanks for quick response...
currently the cpu runs at voltage: 1,264V at full so i guess 1, 45 should be fine. I ran 400 on the FSB without changing voltage or anything else, but then everything became quite unstable.

do i still need to disable the spreads?

You mean you tried 400 FSB at the stock CPU voltage (1.26v)? Because that surely isn't going to work.

running smootly so far, idle and normal use cpu temp is 42 degrees which isnt too bad i guess???
what was the name of that testing software again?i saw some link here somewhere but cant remember where...